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All results from a given calculation for CHOCOOH (oxo acetic acid)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-302.415749
Energy at 298.15K-302.418939
HF Energy-301.559357
Nuclear repulsion energy162.932023
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3741 3555 113.17      
2 A' 3073 2920 42.74      
3 A' 1852 1760 150.42      
4 A' 1747 1660 62.98      
5 A' 1413 1342 331.67      
6 A' 1369 1301 17.21      
7 A' 1237 1176 2.35      
8 A' 900 855 50.24      
9 A' 693 659 15.69      
10 A' 508 483 5.08      
11 A' 290 276 32.95      
12 A" 1014 964 2.11      
13 A" 689 655 73.87      
14 A" 573 544 43.68      
15 A" 182 173 21.82      

Unscaled Zero Point Vibrational Energy (zpe) 9640.7 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 9160.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-311G**
ABC
0.36740 0.15279 0.10791

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.749 -0.751 0.000
C2 0.000 0.585 0.000
O3 -0.144 -1.805 0.000
O4 -0.578 1.642 0.000
O5 1.330 0.436 0.000
H6 -1.848 -0.673 0.000
H7 1.483 -0.523 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53181.21532.39932.39391.10152.2438
C21.53182.39421.20491.33802.23561.8512
O31.21532.39423.47422.68202.04542.0714
O42.39931.20493.47422.25712.64072.9893
O52.39391.33802.68202.25713.36570.9711
H61.10152.23562.04542.64073.36573.3343
H72.24381.85122.07142.98930.97113.3343

picture of oxo acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 122.043 C1 C2 O5 112.887
C2 C1 O3 120.851 C2 C1 H6 115.235
C2 O5 H7 105.478 O3 C1 H6 123.914
O4 C2 O5 125.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability